Open source. Open possibilities.

Loguru simplifies Python logging with zero boilerplate, colorful output, file rotation, structured logging, and thread safety. Ideal for scripts and libraries.

Croupier is a general-purpose GM backend system for game operations, supporting integrated management of multiple games and environments. It utilizes a TCP session model for Agent-Server and SDK-Agent communication and defines business scopes via gameId and env.

A dependency-free, ESM-only polyglot logging SDK for Next.js, browsers, and edge runtimes. It supports OpenTelemetry, Loki, and Supabase Realtime, offering chainable events, secure redaction, and multi-language native libraries.

Apache SkyWalking is an open-source APM system designed for microservices, cloud-native, and container-based architectures. It provides distributed tracing, multi-language agents, eBPF monitoring, native BanyanDB storage, log pipelines, alerting, and AI-powered anomaly detection.

POCO is a collection of cross-platform C++ class libraries for building network- and internet-based applications across desktop, server, mobile, IoT, and embedded systems.

Argos is a Go instrumentation library that adds OpenTelemetry traces, metrics and correlated logging to microservices via one Init/Run call, plus drop-in wrappers per client library. The root module has no vendor SDK dependencies; each integration ships as its own module.

slogcp is a Google Cloud-native structured logging handler for Go using the standard slog API. It enables Cloud Logging, Trace, and Error Reporting integration for services on Cloud Run, GKE, and more.

StormByte Logger is a C++26 logging library providing stream-based logging with configurable levels, headers, and redaction. Features include human-readable number formatting, thread-safe logging via ThreadedLog, and redaction for text and numbers.

spdlog is a fast C++ logging library offering header-only or compiled usage, rich formatting via fmt, async mode, multiple log targets, and cross-platform support for Linux, Windows, macOS, and Android.

A Winston plugin for the modern-errors library that adds fullFormat() and shortFormat() helpers for improved error logging. It supports configurable stack traces, log levels, nested errors, and JSON-safe output for Node.js applications.

WordPress plugin client for ovos console error monitoring and cyberdefense. Reports PHP/JS errors, security events, and scanner probes to a self-hosted console instance. Features CVE matching, traffic rollups, and AI-driven analysis.

A Bash script that parses Nginx access logs to produce an interactive HTML dashboard showing request statistics, error counts, top IPs and URLs, plus detection of SQL injection, directory traversal, and XSS attack patterns. Includes optional IP geolocation via ipinfo.io.

TundraLibs is a suite of independent, cross-runtime TypeScript libraries compatible with Deno, Bun, Node.js, Cloudflare Workers, and browsers. It provides modular tools for databases (ORM, drivers), authentication, validation, logging, tracing, caching, and HTTP routing.